RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Description of problem:

In the upstream kernel the queuecommand callout is called with no locks held. In RHEL 6 libiscsi is still using the old style locking so the queuecomand function is called with the host lock held and irqs disabled.

So in RHEL 6 when beiscsi_alloc_pdu is called and and spin_unlock_bh is used it will cause errors.

There is not need to use the bh locking in beiscsi_alloc_pdu because libiscsi will always do the right thing.


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:

This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux maintenance release. Product Management has 
requested further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed 
products. This request is not yet committed for inclusion in an Update release.

*** Bug 816190 has been marked as a duplicate of this bug. ***

Patch(es) available on kernel-2.6.32-269.el6

Ran IO Stress test for 24 hours against NetApp target and no error has been found.

uname -r
2.6.32-269.el6.x86_64

rpm -q iscsi-initiator-utils
iscsi-initiator-utils-6.2.0.872-41.el6.x86_64

modinfo be2iscsi
filename:       /lib/modules/2.6.32-269.el6.x86_64/kernel/drivers/scsi/be2iscsi/be2iscsi.ko
license:        GPL
author:         Emulex Corporation
version:        4.2.162.0

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2012-0862.html